[akitainu]

Somehow I managed to lose the o-ring on my Octane 45 piston. This is one of those feats I have a real penchant for...especially since it hasn't been any where besides the safe and my desk. I ordered up a couple Silencerco replacements. So I'm covered for now. My question is, what are the dimensions of the Viton o-ring and is there a cheaper bulk option? I don't plan on losing another one. But then again, I didn't plan on losing the first. Plus I look forward to wearing them out the old fashioned way in the near future.

 

[Jeremy M.]

They are M16 50 O Rings M16 O' Rings O' Rings | eBay

 

[akitainu]

They are M16

Many thanks. Like I said, I ordered a couple of replacements from you fine folks earlier. Hopefully I won't need any anytime soon.

 

[KiA]

one of the reviews says that 202 Viton O-Ring, 75A Durometer, Black, 1/4" ID, 1/2" OD, 1/8" Width is the same oring.

you could also try the oring store.

this thread on ar15.com states that only the metric pistons have the oring. maybe it wasn't there in the first place. are you sure that you lost it?

 

[Justin Bove]

Check out McMaster-Carr (McMaster-Carr). They make the O-rings that silencer companies use and markup and sell as replacements. You just have to Google the McMaster-Carr part number for you silencer. Like part number 9263K598 for a Ti-Rant 45 end cap is $7.21 per pack of 10. A long time ago I ordered every O-Ring used in my silencer collection and I still have bunches left.

 

[djv38]

I think I ordered 100 and 75 O-rings that fit my Osprey and Sparrow from McMaster-Carr. Shipping price is kind of stupid, but still way cheaper in the long run than buying a few. I noticed my Osprey piston tends to chew up the O-ring when I clean it, so that will get replaced at least a couple times a year (so, I may run out of them by the time I'm 75).

 

[akitainu]

maybe it wasn't there in the first place. are you sure that you lost it?

Well, now I'm second guessing myself. I could have sworn it was there when I unboxed everything. But I got two Octanes/pistons at the same time, and one o-ring wasn't seated in the groove all the way. So I know that one had one. But I have been fairly scatterbrained lately...so who knows? This is the .578x28 piston on the Octane 45. The other is M13.5x1 LH on the Octane 9 (still has o-ring).

 

[LESTER]

Somehow I managed to lose the o-ring on my Octane 45 piston.

I could have sworn it was there when I unboxed everything.

I would say one of your cats is the culprit one of them hauled it off when your weren't looking!:lol::-D

 

[bayonet14]

Lmao! Its not funny - buts its dam funny

O-ring catnip

 

[akitainu]

I would say one of your cats is the culprit one of them hauled it off when your weren't looking!:lol::-D

This is always a distinct possibility.

A few years back, I had stripped down a Sig556. When I went to put it back together...no charging handle. I tore apart my office looking for it. I finally gave up and called Sig. I told them I thought that my cat may have run off with it, they comped me one...and laughed at me. A month or so later I found the original...in the guest room...on the other side of the house...as far from my desk as you can get without leaving the place. There's still a 5.56 snap cap somewhere under this roof. That's going on 5 years missing.